Alert archive / Pennsylvania / Flash Flood Warnings in 1994
Flash Flood Warning 12, NWS State College, PA
NWS State College, PA issued this flash flood warning at Aug 18, 1994, 1:08 AM EDT for Lycoming County, Pennsylvania. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Aug 18, 1994, 1:08 AM EDT (05:08 UTC)
- Expired
- Aug 18, 1994, 3:15 AM EDT
- In force
- 2 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Lycoming County, PA
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 5.1 hours before the alert went out and 222 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 225 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 753 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Aug 17, 10:41 PM EDT, 2 hours 27 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180440- SPECIAL WEATHER STATEMENT - NATIONAL WEATHER SERVICE STATE COLLEGE PA 1041 PM EDT WED AUG 17 1994 ...A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT INTO THURSDAY FOR PORTIONS OF THE MIDDLE SUSQUEHANNA VALLEY... ...A TORNADO WATCH CONTINUES IN EFFECT FOR PORTIONS OF THE SUSQUEHANNA VALLEY AND THE CENTRAL MOUNTAINS UNTIL 11 PM EDT... AT 1030 PM STATE COLLEGE WEATHER RADAR INDICATED A DIMINISHING AREA OF SHOWER ACTIVITY ACROSS SOUTHERN PENNSYLVANIA. NORTHERN SECTIONS OF THE STATE ARE NOW SEEING THE STEADY MODERATE RAIN. THE HEAVIEST ACTIVITY HAS NOW MOVED INTO CLEARFIELD....CAMERON...CLINTON...MCKEAN AND POTTER COUNTIES.. THESE AREAS WILL LIKELY SEE RAINFALL RATES OF ONE HALF INCH /0.50/ PER HOUR DURING THE NEXT TWO HOURS. AREAS WITH POOR DRAINAGE PROBLEMS MAY SEE MINOR FLOODING. TO THE SOUTH...SHOWERS WILL CONTINUE IN THE LOWER SUSQUEHANNA AND SOUTH CENTRAL MOUNTAINS. THESE AREAS ARE ALSO UNDER A TORNADO WATCH. REMEMBER...A TORNADO WATCH IS STILL IN EFFECT FOR PORTIONS OF CENTRAL AND SOUTHEASTERN PENNSYLVANIA UNTIL 11 PM. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IN A HOME OR BUSINESS IS AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. AVOID WINDOWS. IF YOU ARE IN A FLOOD PRONE AREA...YOU SHOULD MONITOR WATER LEVELS AND BE PREPARED TO MOVE TO HIGHER GROUND...SHOULD FLOOD WATERS THREATEN. WINTHER
Special weather statement, Aug 17, 11:11 PM EDT, 1 hour 57 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180415- SPECIAL WEATHER STATEMENT - NATIONAL WEATHER SERVICE STATE COLLEGE PA 1113 PM EDT WED AUG 17 1994 ...A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR PORTIONS OF THE MIDDLE SUSQUEHANNA VALLEY ... ...THE TORNADO WATCH FOR SECTIONS OF CENTRAL AND SOUTHEAST PENNSYLVANIA HAS EXPIRED... THE TORNADO WATCH FOR SECTIONS OF CENTRAL AND SOUTHEASTERN PENNSYLVANIA HAS EXPIRED. NO REPORTS OF SEVERE WEATHER WERE REPORTED TO THE STATE COLLEGE OFFICE. THE SMALL STREAM AND URBAN FLOOD WATCH IS NO LONGER IN EFFECT FOR SECTIONS THE LOWER SUSQUEHANNA VALLEY AND SECTIONS OF THE CENTRAL AND SOUTHERN MOUNTAINS. A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR THE FOLLOWING COUNTIES... LYCOMING...UNION...SNYDER...SULLIVAN...SOUTHERN CLINTON...MONTOUR...NORTHUMBERLAND...COLUMBIA...SCHUYLKILL... WINTHER
Special weather statement, Aug 17, 11:13 PM EDT, 1 hour 55 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180415- SPECIAL WEATHER STATEMENT - NATIONAL WEATHER SERVICE STATE COLLEGE PA 1113 PM EDT WED AUG 17 1994 ...A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR PORTIONS OF THE MIDDLE SUSQUEHANNA VALLEY ... ...THE TORNADO WATCH FOR SECTIONS OF CENTRAL AND SOUTHEAST PENNSYLVANIA HAS EXPIRED... THE TORNADO WATCH FOR SECTIONS OF CENTRAL AND SOUTHEASTERN PENNSYLVANIA HAS EXPIRED. NO REPORTS OF SEVERE WEATHER WERE REPORTED TO THE STATE COLLEGE OFFICE. THE SMALL STREAM AND URBAN FLOOD WATCH IS NO LONGER IN EFFECT FOR SECTIONS THE LOWER SUSQUEHANNA VALLEY AND SECTIONS OF THE CENTRAL AND SOUTHERN MOUNTAINS. A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR THE FOLLOWING COUNTIES... LYCOMING...UNION...SNYDER...SULLIVAN...SOUTHERN CLINTON...MONTOUR...NORTHUMBERLAND...COLUMBIA...SCHUYLKILL... WINTHER
Special weather statement, Aug 18, 12:16 AM EDT, 52 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180620- SPECIAL WEATHER STATEMENT AND SHORT TERM FORECAST NATIONAL WEATHER SERVICE STATE COLLEGE PA 1218 AM EDT THU AUG 18 1994 ...A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR PORTIONS OF THE MIDDLE SUSQUEHANNA VALLEY ... A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR THE FOLLOWING COUNTIES... LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON... MONTOUR... NORTHUMBERLAND... COLUMBIA AND SCHUYLKILL. AT 1205 AM EDT... DOPPLER RADAR SHOWED A LARGE AREA OF LIGHT TO MODERATE RAIN ACROSS NORTHERN PENNSYLVANIA AND THE MIDDLE SUSQUEHANNA VALLEY. THE AREA OF RAIN WAS MAINLY NORTH OF INTERSTATE 80... EXCEPT IN THE SUSQUEHANNA VALLEY WHERE RAIN EXTENDED FROM WILLIAMSPORT AND BERWICK TO JUST NORTH OF THE GREATER HARRISBURG AREA. SOUTH OF I-80 ACROSS THE CENTRAL AND SOUTH CENTRAL MOUNTAIN AREAS...RADAR SHOWED ONLY PATCHY AREAS OF LIGHT RAIN. THE LARGE AREA OF RAIN IS EXPECTED TO CONTINUE MOVING SLOWLY NORTHEAST LATE THIS EVENING WITH SIGNIFICANT RAINFALL CONTINUING MAINLY NORTH OF I-80 AND ACROSS THE MIDDLE SUSQUEHANNA VALLEY THROUGH 2 AM. AS A RESULT... A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES OVERNIGHT FOR MUCH OF THE MIDDLE SUSQUEHANNA VALLEY. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. WATER ON ROADWAYS MAY BE HARD TO SEE. NICOSIA
Special weather statement, Aug 18, 12:18 AM EDT, 50 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180620- SPECIAL WEATHER STATEMENT AND SHORT TERM FORECAST NATIONAL WEATHER SERVICE STATE COLLEGE PA 1218 AM EDT THU AUG 18 1994 ...A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR PORTIONS OF THE MIDDLE SUSQUEHANNA VALLEY ... A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR THE FOLLOWING COUNTIES... LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON... MONTOUR... NORTHUMBERLAND... COLUMBIA AND SCHUYLKILL. AT 1205 AM EDT... DOPPLER RADAR SHOWED A LARGE AREA OF LIGHT TO MODERATE RAIN ACROSS NORTHERN PENNSYLVANIA AND THE MIDDLE SUSQUEHANNA VALLEY. THE AREA OF RAIN WAS MAINLY NORTH OF INTERSTATE 80... EXCEPT IN THE SUSQUEHANNA VALLEY WHERE RAIN EXTENDED FROM WILLIAMSPORT AND BERWICK TO JUST NORTH OF THE GREATER HARRISBURG AREA. SOUTH OF I-80 ACROSS THE CENTRAL AND SOUTH CENTRAL MOUNTAIN AREAS...RADAR SHOWED ONLY PATCHY AREAS OF LIGHT RAIN. THE LARGE AREA OF RAIN IS EXPECTED TO CONTINUE MOVING SLOWLY NORTHEAST LATE THIS EVENING WITH SIGNIFICANT RAINFALL CONTINUING MAINLY NORTH OF I-80 AND ACROSS THE MIDDLE SUSQUEHANNA VALLEY THROUGH 2 AM. AS A RESULT... A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES OVERNIGHT FOR MUCH OF THE MIDDLE SUSQUEHANNA VALLEY. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. WATER ON ROADWAYS MAY BE HARD TO SEE. NICOSIA
Special weather statement, Aug 18, 12:50 AM EDT, 18 minutes before
PAZ012-037-038-041-042-045-046-049>052-181750- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 1250 AM EDT THU AUG 18 1994 RADIO STATION WX-55 WILLIAMSPORT PENNSYLVANIA IS BACK ON THE AIR. FJG
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 11:25 PM EDT | Flash Flood Warning | CTP | Cameron | 2 hr |
| Aug 18, 1:23 AM EDT | Flash Flood Warning | CTP | Tioga | 2 hr |
| Aug 18, 1:31 AM EDT | Flash Flood Warning | CTP | Potter | 119 min |
| Aug 18, 2:39 AM EDT | Flash Flood Warning | CTP | Union | 2 hr |
| Aug 18, 3:05 AM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Aug 18, 3:10 AM EDT | Flash Flood Warning | CTP | Lycoming | 3 hr |
| Aug 18, 3:40 AM EDT | Flash Flood Warning | CTP | Clearfield, Clinton | 4 hr |
| Aug 18, 3:52 AM EDT | Flash Flood Warning | CTP | Centre | 4 hr |
| Aug 18, 4:25 AM EDT | Flash Flood Warning | CTP | Tioga | 6 hr |
| Aug 18, 4:34 AM EDT | Flash Flood Warning | CTP | Lycoming, Union | 5 hr |
| Aug 18, 9:00 AM EDT | Flash Flood Warning | CTP | Cameron | 3 hr |
| Aug 18, 9:57 AM EDT | Flash Flood Warning | CTP | Lycoming, Tioga | 3 hr |
| Aug 18, 1:00 PM EDT | Flash Flood Warning | CTP | Lycoming | 5 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 1994Every flash flood warning in 1994
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.